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Precision Door Weatherstrip Seal, Left Hand DWL 1110 78

Precision Door Weatherstrip Seal, Left Hand DWL 1110 78
Precision Door Weatherstrip Seal, Left Hand DWL 1110 78
$68.99 ea
NEWARRIVING SOONEstimated Ship Date 04/16/2026 (If Ordered Today)
Model: 3430934
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
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The Precision Door Weatherstrip Seal, Left Hand DWL 1110 78 is a direct-fit door seal designed to restore proper sealing, reduce wind noise, and prevent water and dust intrusion. Molded from durable EPDM rubber with an OEM-style profile, this left-hand weatherstrip helps protect interior trim and metal surfaces from moisture-related corrosion while improving cabin quietness. It provides long-lasting resistance to UV, ozone, and temperature extremes and installs with basic hand tools for a reliable restoration or replacement application.
Features:
  • Made from durable EPDM rubber with UV and ozone resistance for long service life.
  • OEM-style profile for accurate sealing against wind, rain, and dust.
  • Reduces wind noise and vibration while preventing water intrusion and interior damage.
  • Designed as a restoration or replacement part to return doors to factory fit and function.
  • Easy to trim and seat; adheres well when used with standard weatherstrip adhesive.
Installation / Application:
  • Difficulty: 2/5
  • Estimated time: 30-60 minutes
Suggested Tools:
  • Flat-head screwdriver or trim removal tool
  • Phillips screwdriver (if door panel removal required)
  • Rubbing alcohol or surface cleaner
  • Clean cloths
  • Weatherstrip adhesive (if required)
  • Utility knife or scissors
  • Rubber roller or block of wood (for seating the seal)
Instructions:
  1. Open the door and remove the old weatherstrip by gently prying out retainers or peeling adhesive; remove any retaining clips if present.
  2. Clean the mounting channel and surrounding surface thoroughly with rubbing alcohol or a suitable cleaner and allow to dry.
  3. Test-fit the new Left Hand DWL 1110 78 seal along the doorframe to confirm orientation and length; trim excess with a utility knife if necessary.
  4. If adhesive is required, apply a thin, even bead of weatherstrip adhesive to the mounting flange or channel following the adhesive manufacturer’s directions.
  5. Starting at the top front corner, press the seal firmly into the channel and work around the door, ensuring the bulb and flange seat into place without twists or kinks.
  6. Use a rubber roller or block of wood to seat the seal evenly and to ensure good contact with adhesive or mounting surfaces.
  7. Reinstall any retainers or clips removed earlier and wipe away any excess adhesive immediately.
  8. Close the door and check alignment and sealing. Allow adhesive to cure per product instructions before exposing to water.
About Precision Replacement Parts

Since 1986 Precision Replacement Parts has been a trusted name in the Automotive Glass Industry.

Our knowledge and experience in manufacturing millions of extruded and molded EPDM Rubber, PVC and HDPE based plastics, and various stamped and extruded metal products for the classic and late model industries has allowed Precision to expand our services into multiple product markets.

Along with our own USA based production facility, Precision also partners with 25 different manufactures worldwide with a reputation as a global leader supplying OEM and replacement products to a number of different industries.  Our partnerships along with our own in-house manufacturing and fabrication capability gives Precision a unique position in helping to meet the expanding needs of customers everywhere, providing them with a sustained competitive advantage.

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Years
Chevrolet C10 Suburban 1978 - 1986
Chevrolet C10 1978 - 1986
Chevrolet C20 Suburban 1978 - 1986
Chevrolet C20 1978 - 1986
Chevrolet K10 Suburban 1978 - 1986
Chevrolet K20 Suburban 1978 - 1986
Chevrolet K5 Blazer 1978 - 1986
GMC C15 Suburban 1978
GMC C1500 Suburban 1979 - 1986
GMC C1500 1979 - 1982
GMC C15 1978
GMC C25 Suburban 1978
GMC C2500 Suburban 1979 - 1986
GMC C2500 1979 - 1986
GMC C25 1978
GMC C3500 1979 - 1986
GMC C35 1978
GMC C5000 1979 - 1982
GMC Jimmy 1978 - 1986
GMC K15 Suburban 1978
GMC K1500 Suburban 1979 - 1986
GMC K1500 1979 - 1986
GMC K15 1978
GMC K25 Suburban 1978
GMC K2500 Suburban 1979 - 1986
GMC K2500 1979 - 1986
GMC K25 1978
GMC K3500 1979 - 1986
GMC K35 1978

Specifications:

Part Type Door Seal
Proposition 65 www.P65Warnings.ca.gov
Warranty Lifetime on Defects TX

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